package org.i1510.wx.utils;


import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import net.sf.json.JSONException;
import net.sf.json.JSONObject;

import org.i1510.wx.bean.Menu;
import org.i1510.wx.constant.API4GZH;
import org.i1510.wx.utils.Token.AccessToken;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;



/**
 * @author Administrator
 * 微信工具类
 */
public class WxUtils {
	private static Logger logger = LoggerFactory.getLogger(WxUtils.class);
	

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * @param outputStr
	 *            提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpRequest(String requestUrl,
			String requestMethod, String outputStr) {
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		try {
			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			URL url = new URL(requestUrl);
			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url
					.openConnection();
			httpUrlConn.setSSLSocketFactory(ssf);

			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);
			// 设置请求方式（GET/POST）
			httpUrlConn.setRequestMethod(requestMethod);

			if ("GET".equalsIgnoreCase(requestMethod))
				httpUrlConn.connect();

			// 当有数据需要提交时
			if (null != outputStr) {
				OutputStream outputStream = httpUrlConn.getOutputStream();
				// 注意编码格式，防止中文乱码
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}

			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(
					inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(
					inputStreamReader);

			String str = null;
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
			bufferedReader.close();
			inputStreamReader.close();
			// 释放资源
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			jsonObject = JSONObject.fromObject(buffer.toString());
		} catch (ConnectException ce) {
			logger.error("Weixin server connection timed out.");
		} catch (Exception e) {
			logger.error("https request error:{}", e);
		}
		return jsonObject;
	}

	/**
	*@Author Rambo
	*@Desc：获取公众号access_token
	*@param appId
	*@param appSecret
	*@return TODO
	*@Version  WxUtils.java,v 1.1 2014-10-10 上午10:40:23 
	*/
	public static AccessToken getAccessToken4GZH(String appId, String appSecret) {
		AccessToken accessToken = null;
		String access_token_url = "";
		String requestUrl = "";
		access_token_url = API4GZH.ACCESS_TOKEN_URL_GET;
		requestUrl = access_token_url.replace("APPID", appId).replace("APPSECRET", appSecret);
		

		JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
		// 如果请求成功
		if (null != jsonObject) {
			try {
				accessToken = new AccessToken();
				accessToken.setToken(jsonObject.getString("access_token"));
				accessToken.setExpiresIn(7200);
			} catch (JSONException e) {
				accessToken = null;
				// 获取token失败
				logger.error("获取token失败=>", jsonObject
						.getInt("errcode"), jsonObject.getString("errmsg"));
				System.out.println("获取token失败=>"+jsonObject
						.getInt("errcode")+"--"+jsonObject.getString("errmsg"));
			}
		}else{
			System.out.println("获取token成功:"+accessToken.getToken());
		}		
		return accessToken;
	}
	/**
	*@Author Rambo
	*@Desc：创建公众号菜单
	*@param menu
	*@param accessToken
	*@return TODO
	*@Version  WxUtils.java,v 1.1 2014-10-18 下午10:05:14 
	*/
	public static int createMenuGZH(Menu menu, String accessToken) {
		// 拼装创建菜单的url
		String url = "";
		String menu_create_url = "";
		menu_create_url = API4GZH.MEMU_CREATE_URL;
		// 拼装创建菜单的url
		url = menu_create_url.replace("ACCESS_TOKEN", accessToken);
	
		int result = 0;

		// 将菜单对象转换成json字符串
		String jsonMenu = JSONObject.fromObject(menu).toString();
		System.out.println(jsonMenu);
		// 调用接口创建菜单
		JSONObject jsonObject = httpRequest(url, "POST", jsonMenu);

		if (null != jsonObject) {
			if (0 != jsonObject.getInt("errcode")) {
				result = jsonObject.getInt("errcode");
				logger.error("创建菜单失败 errcode:{} errmsg:{}", jsonObject
						.getInt("errcode"), jsonObject.getString("errmsg"));
			}
		}

		return result;
	}

}
